arch/um/os-Linux/user_syms.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #define __NO_FORTIFY
   3 #include <linux/types.h>
   4 #include <linux/module.h>
   5
   6 /* Some of this are builtin function (some are not but could in the future),
   7  * so I *must* declare good prototypes for them and then EXPORT them.
   8  * The kernel code uses the macro defined by include/linux/string.h,
   9  * so I undef macros; the userspace code does not include that and I
  10  * add an EXPORT for the glibc one.
  11  */
  12
  13 #undef strlen
  14 #undef strstr
  15 #undef memcpy
  16 #undef memset
  17
  18 extern size_t strlen(const char *);
  19 extern void *memmove(void *, const void *, size_t);
  20 extern void *memset(void *, int, size_t);
  21 extern int printf(const char *, ...);
  22
  23 /* If it's not defined, the export is included in lib/string.c.*/
  24 #ifdef __HAVE_ARCH_STRSTR
  25 EXPORT_SYMBOL(strstr);
  26 #endif
  27
  28 #ifndef __x86_64__
  29 extern void *memcpy(void *, const void *, size_t);
  30 EXPORT_SYMBOL(memcpy);
  31 EXPORT_SYMBOL(memmove);
  32 EXPORT_SYMBOL(memset);
  33 #endif
  34
  35 EXPORT_SYMBOL(printf);
  36
  37 /* Here, instead, I can provide a fake prototype. Yes, someone cares: genksyms.
  38  * However, the modules will use the CRC defined *here*, no matter if it is
  39  * good; so the versions of these symbols will always match
  40  */
  41 #define EXPORT_SYMBOL_PROTO(sym)       \
  42         int sym(void);                  \
  43         EXPORT_SYMBOL(sym);
  44
  45 extern void readdir64(void) __attribute__((weak));
  46 EXPORT_SYMBOL(readdir64);
  47 extern void truncate64(void) __attribute__((weak));
  48 EXPORT_SYMBOL(truncate64);
  49
  50 #ifdef CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA
  51 EXPORT_SYMBOL(vsyscall_ehdr);
  52 EXPORT_SYMBOL(vsyscall_end);
  53 #endif
  54
  55 EXPORT_SYMBOL_PROTO(__errno_location);
  56
  57 EXPORT_SYMBOL_PROTO(access);
  58 EXPORT_SYMBOL_PROTO(open);
  59 EXPORT_SYMBOL_PROTO(open64);
  60 EXPORT_SYMBOL_PROTO(close);
  61 EXPORT_SYMBOL_PROTO(read);
  62 EXPORT_SYMBOL_PROTO(write);
  63 EXPORT_SYMBOL_PROTO(dup2);
  64 EXPORT_SYMBOL_PROTO(__xstat);
  65 EXPORT_SYMBOL_PROTO(__lxstat);
  66 EXPORT_SYMBOL_PROTO(__lxstat64);
  67 EXPORT_SYMBOL_PROTO(__fxstat64);
  68 EXPORT_SYMBOL_PROTO(lseek);
  69 EXPORT_SYMBOL_PROTO(lseek64);
  70 EXPORT_SYMBOL_PROTO(chown);
  71 EXPORT_SYMBOL_PROTO(fchown);
  72 EXPORT_SYMBOL_PROTO(truncate);
  73 EXPORT_SYMBOL_PROTO(ftruncate64);
  74 EXPORT_SYMBOL_PROTO(utime);
  75 EXPORT_SYMBOL_PROTO(utimes);
  76 EXPORT_SYMBOL_PROTO(futimes);
  77 EXPORT_SYMBOL_PROTO(chmod);
  78 EXPORT_SYMBOL_PROTO(fchmod);
  79 EXPORT_SYMBOL_PROTO(rename);
  80 EXPORT_SYMBOL_PROTO(__xmknod);
  81
  82 EXPORT_SYMBOL_PROTO(symlink);
  83 EXPORT_SYMBOL_PROTO(link);
  84 EXPORT_SYMBOL_PROTO(unlink);
  85 EXPORT_SYMBOL_PROTO(readlink);
  86
  87 EXPORT_SYMBOL_PROTO(mkdir);
  88 EXPORT_SYMBOL_PROTO(rmdir);
  89 EXPORT_SYMBOL_PROTO(opendir);
  90 EXPORT_SYMBOL_PROTO(readdir);
  91 EXPORT_SYMBOL_PROTO(closedir);
  92 EXPORT_SYMBOL_PROTO(seekdir);
  93 EXPORT_SYMBOL_PROTO(telldir);
  94
  95 EXPORT_SYMBOL_PROTO(ioctl);
  96
  97 EXPORT_SYMBOL_PROTO(pread64);
  98 EXPORT_SYMBOL_PROTO(pwrite64);
  99
 100 EXPORT_SYMBOL_PROTO(statfs);
 101 EXPORT_SYMBOL_PROTO(statfs64);
 102
 103 EXPORT_SYMBOL_PROTO(getuid);
 104
 105 EXPORT_SYMBOL_PROTO(fsync);
 106 EXPORT_SYMBOL_PROTO(fdatasync);
 107
 108 EXPORT_SYMBOL_PROTO(lstat64);
 109 EXPORT_SYMBOL_PROTO(fstat64);
 110 EXPORT_SYMBOL_PROTO(mknod);
 111
 112 /* Export symbols used by GCC for the stack protector. */
 113 extern void __stack_smash_handler(void *) __attribute__((weak));
 114 EXPORT_SYMBOL(__stack_smash_handler);
 115
 116 extern long __guard __attribute__((weak));
 117 EXPORT_SYMBOL(__guard);
 118
 119 #ifdef _FORTIFY_SOURCE
 120 extern int __sprintf_chk(char *str, int flag, size_t strlen, const char *format);
 121 EXPORT_SYMBOL(__sprintf_chk);
 122 #endif